The performance of commercial photodiodes for dosimetry in mammography

This paper reports the results of an investigation carried out to determine the suitability of using a commercially available photodiode for dosimetry in mammography thereby providing a low cost dosemeter with a direct reading of the radiation dose. A mammographic X-ray generator (Siemens Mammomat 1...

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Bibliographic Details
Published inRadiation protection dosimetry Vol. 115; no. 1-4; p. 391
Main Authors Batista, E, Khoury, H J, Melo, F A, Barros, V, da Silva, Jr, E F
Format Journal Article
LanguageEnglish
Published England 01.01.2005
Subjects
Body Burden
Equipment Design
Equipment Failure Analysis
Humans
Mammography - instrumentation
Mammography - methods
Radiation Protection - instrumentation
Radiation Protection - methods
Radiometry - instrumentation
Radiometry - methods
Radiotherapy Dosage
Relative Biological Effectiveness
Risk Assessment - methods
Risk Factors
Semiconductors
Transducers
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Summary:This paper reports the results of an investigation carried out to determine the suitability of using a commercially available photodiode for dosimetry in mammography thereby providing a low cost dosemeter with a direct reading of the radiation dose. A mammographic X-ray generator (Siemens Mammomat 1000) with tube potential in the 23-30 kV range and a constant potential X-ray generator (Pantak) with a W/Mo anode/filter combination were used in this study. The results showed that the photodiode response is highly linear within mammographic dose ranges and that the energy dependence was <3% at tube potentials of 25-30 kV. Good agreement was observed between the incident air kerma measured with both the photodiode and the ionization chamber. These results show the viability of using the photodiode as a dosemeter system in mammography.
ISSN:0144-8420
DOI:10.1093/rpd/nci045